Lemhi County Soil Data
Lemhi County, Idaho
USDA SSURGO / PHZMAvg pH
N/A
Texture
Unknown
Drainage
N/A
Organic Matter
N/A
Hydrologic Group
N/A
Data Story
About Soil in Lemhi County, Idaho
The Mystery of Lemhi's Soil
Lemhi County does not have recorded data for soil taxonomic order, texture, or pH levels. We cannot compare the local acidity to the national median of 6.5 or the state average of 6.04. This rugged interior region remains largely unmapped in the current soil database.
Undiscovered Soil Texture
Data regarding sand, silt, and clay percentages is missing for this county. Understanding these ratios is important for gauging drainage and how easily the land can be tilled. Gardeners should consider a home test kit to analyze their specific backyard soil.
Exploring Fertility Potential
There is no specific data for organic matter or available water capacity (AWC) in the Lemhi area. This prevents comparison with the state's average organic matter level of 27.53%. Local observations of plant health are currently the best guide for assessing soil vigor.
Hydrology in the Mountains
The dominant drainage class and hydrologic group for the county are currently unknown. This data is essential for managing runoff and building stable foundations in varied terrain. Always perform a site-specific survey before starting major earthworks.
Gardening in Zone 5b
Lemhi County is classified as hardiness zone 5b, necessitating a focus on cold-tolerant plant varieties. The cooler climate means a slightly shorter growing window, but many vegetables will still thrive. Plan your garden for the unique challenges of Idaho’s mountain valleys.
Soil Composition
Composition data not available for this county.
Soil pH
pH data not available for this county.
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Hydrologic group data not available.
Drainage Class
Drainage class data not available.
Soil Profile
Dominant texture: Unknown
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Soil Amendment Products
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Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Lemhi County have?
Lemhi County's soil is classified as Unknown. This indicates the relative proportions of sand, silt, and clay — sand percentage unavailable, silt percentage unavailable, and clay percentage unavailable. Sandy soils drain quickly but may need more frequent irrigation and fertilization.
Is Lemhi County's soil acidic or alkaline?
pH data is not available for Lemhi County.
What is the drainage class for Lemhi County?
Drainage class data is not currently available for Lemhi County.
What crops or plants grow well in Lemhi County's soil?
Based on Lemhi County's Unknown texture, soil pH, and drainage class, the soil is well suited for a variety of crops depending on local conditions.
What USDA soil order is found in Lemhi County?
The dominant USDA soil order for Lemhi County is not currently available in our dataset.
Soil & Planting Advisory: Lemhi County
Soil Verdict
Lemhi County is in USDA hardiness zone 5b, a cold climate zone. where winter lows can reach -15°F. Freeze-thaw cycles are moderate; soil biology slows in winter but recovers reliably in spring, supporting a broad range of plants.
Planting Guidance
A wide plant palette is possible: deciduous trees, most shrubs, cool-season vegetables, and many perennials thrive here. Winter protection (mulch, burlap wraps) helps push the zone boundary for desired species. Always match plant selections to the specific microclimate of your property — low spots, slopes, and wind exposure can shift effective hardiness by half a zone.
Soil Implications
Moderate freeze-thaw cycles naturally aerate the soil but can also cause compaction in clay-heavy areas; annual core aeration is beneficial. Organic matter amendments decompose at a moderate pace — aim for 3-5% organic content for optimal fertility. When soil temperatures drop below freezing, microbial nitrogen cycling stops; spring fertilization is more effective than late-fall application.
Regional Context
Lemhi County is somewhat cooler than the Idaho statewide average. The zone range of 5a-6a within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Lemhi County on LawnByCounty.com →
Other Counties in Idaho
Soil data sourced from USDA SSURGO via Soil Data Access. Data is informational only and should not be used as a substitute for on-site soil testing. Contact your local NRCS office for site-specific soil information.